The Imation 52X CD-R. The media has MID 97m15s17f and probably its based at Ritek manufacturer.

We expected all drives to perform equal however the Cocopa ECD813-Y (TSSTcorp SN-208AB) didn't recognized the media so it got a zero score

As we can see all drives use CAV to ac hive 24X at the other end and have more or less the same average writing speed. The Rioddas BT-638 (HLDS GU10N) due to Zone-CLV has lower average writing speed.

After the burn process, we tried to read the burned disc with the same drive and wrote down their average reading speed.

One more drive got a zero score at this test since...it didn't managed to read/recognize its burned disc.

After many hours measuring all discs we have our burn quality results.

The drives with the lowest C1/C2 errors are expected to get higher score points even they burn slower a disc. After all we all want perfectly readable discs.

The HLDS PortableDVD managed to keep a low C2 error rate and got the first place with 7.90 points. On the other hand we would avoid using the bottom placed burners since they produced many C1 and C2 errors.